liblapack-doc-man 3.6.0-2ubuntu2 (amd64 binary) in ubuntu xenial

 LAPACK version 3.X is a comprehensive FORTRAN library that does
 linear algebra operations including matrix inversions, least
 squared solutions to linear sets of equations, eigenvector
 analysis, singular value decomposition, etc. It is a very
 comprehensive and reputable package that has found extensive
 use in the scientific community.
 .
 This package contains manpages for all BLAS and LAPACK routines.